A morph whose submorphs comprise a paste-up of rectangular subparts which "show through". Anything called a 'Playfield' is a PasteUpMorph.

Facilities commonly needed on pages of graphical presentations and on simulation playfields, such as the painting of new objects, turtle trails, gradient fills, background paintings, parts-bin behavior, collision-detection, etc., are (or will be) provided.

A World, the entire Smalltalk screen, is a PasteUpMorph. A World responds true to isWorld. Morph subclasses that have specialized menus (BookMorph) build them in the message addBookMenuItemsTo:hand:. A PasteUpMorph that is a world, builds its menu in HandMorph buildWorldMenu.

presenter A Presenter in charge of stopButton stepButton and goButton,
mouseOverHalosEnabled soundsEnabled fenceEnabled coloredTilesEnabled.
model <not used>
cursor ??
padding ??
backgroundMorph A Form that covers the background.
turtleTrailsForm Moving submorphs may leave trails on this form.
turtlePen Draws the trails.
lastTurtlePositions A Dictionary of (aPlayer -> aPoint) so turtle trails can be drawn
only once each step cycle. The point is the start of the current stroke.
isPartsBin If true, every object dragged out is copied.
autoLineLayout ??
indicateCursor ??
resizeToFit ??
wantsMouseOverHalos If true, simply moving the cursor over a submorph brings up its halo.
worldState If I am also a World, keeps the hands, damageRecorder, stepList etc.
griddingOn If true, submorphs are on a grid

	WiW support
	restartWorldCycleWithEvent: validateMouseEvent:

	accessing
	assureFlapWidth: flapTab useRoundedCorners

	alarms-scheduler
	addAlarm:withArguments:for:at: removeAlarm:for:

	classification
	isWorldMorph world

	cursor
	cursor cursor: cursorWrapped: numberAtCursor rectifyCursor selectedRect valueAtCursor valueAtCursor:

	display
	canHaveFillStyles drawOn: gradientFillColor: printOn: setGradientColor:

	dropping/grabbing
	acceptDroppingMorph:event: automaticPhraseExpansion automaticViewing dropEnabled dropFiles: justDroppedInto:event: morphToDropFrom: originAtCenter positionNear:forExtent:adjustmentSuggestion: repelsMorph:event: wantsDropFiles: wantsDroppedMorph:event:

	event handling
	handlesKeyboard: handlesMouseDown: morphToGrab: mouseDown: mouseUp: processEvent:using:

	flaps
	accommodateFlap: addGlobalFlaps assureFlapTabsFitOnScreen bringFlapTabsToFront correspondingFlapTab deleteAllFlapArtifacts deleteGlobalFlapArtifacts enableGlobalFlaps flapTabs localFlapTabs offsetForAccommodating:onEdge: paintingFlapTab releaseViewers removeAccommodationForFlap:

	genie-processing
	allowsGestureStart:

	gridding
	gridModulus gridModulus: gridOrigin gridOrigin: gridPoint: gridSpec gridSpecPut: gridVisible gridVisibleOnOff gridVisibleString griddingOn griddingOnOff griddingString setGridSpec

	initialization
	adaptedToWorld: becomeActiveDuring: initialize initializeToStandAlone newResourceLoaded releaseCachedState

	interaction loop
	doOneCycleNow keyStroke:

	layout
	addCenteredAtBottom:offset: convertAlignment laySubpartsOutInOneRow layoutChanged

menu & halo

addCustomMenuItems:hand: addPenMenuItems:hand: addPenTrailsMenuItemsTo: addPlayfieldMenuItems:hand: addScalingMenuItems:hand: addStackMenuItems:hand: addWorldHaloMenuItemsTo:hand: addWorldToggleItemsToHaloMenu: autoExpansionString autoLineLayoutString autoViewingString batchPenTrailsString buildDebugMenu: defersHaloOnClickTo: defineApplicationView defineFactoryView deleteBalloonTarget: fenceEnabledString indicateCursorString isOpenForDragNDropString isPartsBinString mightEntertainDirectionHandles mouseOverHalosString originAtCenterString playfieldOptionsMenu presentCardAndStackMenu presentPlayfieldMenu presentViewMenu reformulateUpdatingMenus saveOnFile showApplicationView showExpandedView showFactoryView showFullView showReducedView showThumbnailString transformToShow: wantsDirectionHandles wantsHaloFor: wantsHaloFromClick

misc

abandonCostumeHistory allScriptEditors allScriptors alwaysShowThumbnail cachedOrNewThumbnailFrom: cartesianOrigin closedViewerFlapTabs containsCard: demandsBoolean heightForThumbnails hideFlapsOtherThan:ifClingingTo: hideViewerFlaps hideViewerFlapsOtherThanFor: impartPrivatePresenter innocuousName invalidRect:from: isPlayfieldLike makeDetachable maxHeightToAvoidThumbnailing maximumThumbnailWidth mouseX mouseY nameForCopyIfAlreadyNamed: padding: position: prepareToBeSaved presenter residesInPartsBin roundUpStrays shouldGetStepsFrom: smallThumbnailForPageSorter startRunningAll step stepAll stepTime stopRunningAll thumbnailForPageSorter unhideHiddenObjects updateStatusForAllScriptEditors viewerFlapTabFor: wantsKeyboardFocusFor:

	model
	createCustomModel model modelOrNil setModel:

	naming
	defaultNameStemForInstances

	object fileIn
	convertToCurrentVersion:refStream:

options

autoLineLayout autoLineLayout: automaticViewing: batchPenTrails batchPenTrails: becomeLikeAHolder behaveLikeAHolderString behaveLikeHolder behaveLikeHolder: behavingLikeAHolder fenceEnabled fenceEnabled: indicateCursor indicateCursor: isPartsBin isPartsBin: replaceTallSubmorphsByThumbnails resizeToFit resizeToFitString setPartsBinStatusTo: setThumbnailHeight toggleAlwaysShowThumbnail toggleAutoLineLayout toggleAutomaticPhraseExpansion toggleAutomaticViewing toggleBatchPenTrails toggleBehaveLikeAHolder toggleFenceEnabled toggleIndicateCursor toggleIsPartsBin toggleMouseOverHalos toggleOriginAtCenter toggleResizeToFit updateSubmorphThumbnails wantsMouseOverHalos wantsMouseOverHalos:

	painting
	backgroundSketch backgroundSketch: deleteBackgroundPainting makeNewDrawingWithin paintBackground paintingBoundsAround: prepareToPaint prepareToPaint: reasonablePaintingExtent

	pen
	addImageToPenTrailsFor: arrowheadsOnAllPens clearTurtleTrails createOrResizeTrailsForm drawPenTrailFor:from:to: liftAllPens lowerAllPens noArrowheadsOnAllPens noteNewLocation:forPlayer: notePenDown:forPlayer:at: trailMorph updateTrailsForm

	private
	morphicLayerNumber privateFullMoveBy:

	project
	project releaseSqueakPages storeProjectsAsSegments

	project state
	activeHand canvas firstHand hands handsDo: isStepping: isStepping:selector: listOfSteppingMorphs modelWakeUp stepListSize stepListSummary steppingMorphsNotInWorld viewBox viewBox:

	scripting
	abandonOldReferenceScheme allTileScriptingElements currentVocabulary currentVocabularyFor: hideAllPlayers isCandidateForAutomaticViewing modernizeBJProject recreateScripts relaunchAllViewers scriptorForTextualScript:ofPlayer: showAllPlayers

	stepping
	cleanseStepList runLocalStepMethods runStepMethods startStepping: startStepping:at:selector:arguments:stepTime: stopStepping: stopStepping:selector:

	submorphs-accessing
	morphsInFrontOf:overlapping:do:

	submorphs-add/remove
	addMorphFront: addMorphInLayer:

	undo
	clearCommandHistory commandHistory

	update cycle
	startBackgroundProcess

	viewing
	addViewingItemsTo: imposeListViewSortingBy:retrieving: restoreBoundsOfSubmorphs saveBoundsOfSubmorphs scriptSelectorToTriggerFor: showingListView sortSubmorphsBy: viewByIcon viewByName viewBySize viewNonOverlapping viewingByIconString viewingByNameString viewingBySizeString viewingNonOverlappingString viewingNormally

world menu

activateObjectsTool addUndoItemsTo: bringWindowsFullOnscreen buildWorldMenu: closeUnchangedWindows collapseAll collapseNonWindows connectRemoteUser connectRemoteUserWithName:picture:andIPAddress: deleteNonWindows detachableScriptingSpace disconnectAllRemoteUsers disconnectRemoteUser drawingClass expandAll extractScreenRegion:andPutSketchInHand: findAChangeSorter: findAMessageNamesWindow: findAPreferencesPanel: findATranscript: findDirtyBrowsers: findDirtyWindows: findWindow: getWorldMenu: grabDrawingFromScreen: grabFloodFromScreen: grabLassoFromScreen: grabRubberBandFromScreen: invokeWorldMenu: keystrokeInWorld: makeNewDrawing: makeNewDrawing:at: newDrawingFromMenu: openRecentSubmissionsBrowser: openScrapsBook: printScriptSummary putUpDesktopMenu: putUpWorldMenu: putUpWorldMenuFromEscapeKey removeAllViewers reportLocalAddress showStatusOfAllScripts yellowButtonClickOnDesktopWithEvent:

world state

abandonAllHalos abandonVocabularyPreference activeHand: addAllMorphs: addHand: addMorph:centeredNear: addMorphsAndModel: allMorphsDo: allNonFlapRelatedSubmorphs assureNotPaintingElse: assureNotPaintingEvent: assuredCanvas beWorldForProject: checkCurrentHandForObjectToPaste checkCurrentHandForObjectToPaste2 chooseClickTarget colorAt:belowMorph: currentNaturalLanguage deEmphasizeViewMVC: deleteAllHalos displayWorld displayWorldAsTwoTone displayWorldNonIncrementally displayWorldSafely doOneCycle doOneCycleInBackground doOneSubCycle dragThroughOnDesktop: embeddedProjectDisplayMode endDrawing: exit extent: flashRects:color: fullContainsPoint: fullRepaintNeeded goBack haloMorphOrNil haloMorphs handleFatalDrawingError: initForProject: install installAsActiveSubprojectIn:at:titled: installAsActiveSubprojectIn:titled: installFlaps installVectorVocabulary jumpToProject nextPage open openWithTitle:cautionOnClose: optimumExtentFromAuthor paintArea paintAreaFor: paintBox paintBoxOrNil patchAt:without:andNothingAbove: pauseEventRecorder previousPage privateMoveBy: privateOuterDisplayWorld referencePlayfield removeHand: repairEmbeddedWorlds repositionFlapsAfterScreenSizeChange restoreDisplay restoreFlapsDisplay restoreMorphicDisplay saveAsWorld sketchEditorOrNil sleep someHalo specialNameInModelFor: standardPlayerHit standardSystemController startSteppingSubmorphsOf: triggerClosingScripts triggerOpeningScripts veryDeepCopyWith:

	scripting
	additionsToViewerCategories authoringPrototype defaultNameStemForInstances descriptionForPartsBin supplementaryPartsDescriptions

	Nebraska	top
	addRemoteClient:
	convertRemoteClientToBuffered:
	hasRemoteServer
	releaseRemoteServer My server has been transferred to some other world. Release pending references
	remoteServer
	remoteServer:
	removeRemoteClient:
	transferRemoteServerFrom: Transfer the remote server which was associated with aWorld (if any) to the receiver

	WiW support	top
	restartWorldCycleWithEvent: RAA 27 Nov 99 - redispatch that click picked up from our inner world
	validateMouseEvent:

	accessing	top
	assureFlapWidth:
	flapTab
	useRoundedCorners Somewhat special cased because we do have to fill Display for this

	alarms-scheduler	top
	addAlarm:withArguments:for:at: Add a new alarm with the given set of parameters
	removeAlarm:for: Remove the alarm with the given selector

	classification	top
	isWorldMorph
	world

	cursor	top
	cursor vacuous backstop in case it gets sent to a morph that doesn't know what to do with it
	cursor: for backward compatibility
	cursorWrapped: Set the cursor to the given number, modulo the number of items I contain. Fractional cursor values are allowed.
	numberAtCursor Answer the number represented by the object at my current cursor position
	rectifyCursor
	selectedRect Return a rectangle enclosing the morph at the current cursor. Note that the cursor may be a float and may be out of range, so pick the nearest morph. Assume there is at least one submorph.
	valueAtCursor Answer the submorph of mine indexed by the value of my 'cursor' slot
	valueAtCursor:

	display	top
	canHaveFillStyles Return true if the receiver can have general fill styles; not just colors. This method is for gradually converting old morphs.
	drawOn: Update and draw the turtleTrails form. See the comment in updateTrailsForm.
	gradientFillColor: For backwards compatibility with GradientFillMorph
	printOn: Reimplemented to add a tag showing that the receiver is currently functioning as a 'world', if it is
	setGradientColor: For backwards compatibility with GradientFillMorph

	dropping/grabbing	top
	acceptDroppingMorph:event: The supplied morph, known to be acceptable to the receiver, is now to be assimilated; the precipitating event is supplied
	automaticPhraseExpansion
	automaticViewing Backstop, in case this message gets sent to an owner that is not a playfield
	dropEnabled Get this morph's ability to add and remove morphs via drag-n-drop.
	dropFiles: Handle a number of dropped files from the OS. TODO: - use a more general mechanism for figuring out what to do with the file (perhaps even offering a choice from a menu) - remember the resource location or (when in browser) even the actual file handle
	justDroppedInto:event: This message is sent to a dropped morph after it has been dropped on--and been accepted by--a drop-sensitive morph
	morphToDropFrom: Given a morph being carried by the hand, which the hand is about to drop, answer the actual morph to be deposited. Normally this would be just the morph itself, but several unusual cases arise, which this method is designed to service.
	originAtCenter
	positionNear:forExtent:adjustmentSuggestion: Compute a plausible positioning for adding a subpart of size anExtent, somewhere near aPoint, using adjustmentPoint as the unit of adjustment
	repelsMorph:event:
	wantsDropFiles: Return true if the receiver wants files dropped from the OS.
	wantsDroppedMorph:event: Return true if the receiver wishes to accept the given morph, which is being dropped by a hand in response to the given event. Note that for a successful drop operation both parties need to agree. The symmetric check is done automatically via aMorph wantsToBeDroppedInto: self.

	event handling	top
	handlesKeyboard: Return true if the receiver wishes to handle the given keyboard event
	handlesMouseDown: Do I want to receive mouseDown events (mouseDown:, mouseMove:, mouseUp:)?
	morphToGrab: Return the morph to grab from a mouse down event. If none, return nil.
	mouseDown: Handle a mouse down event.
	mouseUp: Handle a mouse up event. The default response is to let my eventHandler, if any, handle it.
	processEvent:using: Reimplemented to install the receiver as the new ActiveWorld if it is one

	flaps	top
	accommodateFlap: Shift submorphs over, if appropriate
	addGlobalFlaps Must make global flaps adapt to world. Do this even if not shown, so the old world will not be pointed at by the flaps.
	assureFlapTabsFitOnScreen
	bringFlapTabsToFront
	correspondingFlapTab If there is a flap tab whose referent is me, return it, else return nil
	deleteAllFlapArtifacts self currentWorld deleteAllFlapArtifacts
	deleteGlobalFlapArtifacts Delete all flap-related detritus from the world
	enableGlobalFlaps Restore saved global flaps, or obtain brand-new system defaults if necessary
	flapTabs
	localFlapTabs Answer a list of local flap tabs in the current project
	offsetForAccommodating:onEdge: Answer a delta to be applied to my submorphs in order tfor anExtent to be slid inboard on the indicated edge
	paintingFlapTab If the receiver has a flap which has a paintbox, return it, else return nil
	releaseViewers In preparation for saving, make the flapTabs release their viewers.
	removeAccommodationForFlap: Shift submorphs over, if appropriate

	genie-processing	top
	allowsGestureStart:

	gridding	top
	gridModulus
	gridModulus:
	gridOrigin
	gridOrigin:
	gridPoint:
	gridSpec Gridding rectangle provides origin and modulus
	gridSpecPut: Gridding rectangle provides origin and modulus
	gridVisible
	gridVisibleOnOff
	gridVisibleString Answer a string to be used in a menu offering the opportunity to show or hide the grid
	griddingOn
	griddingOnOff
	griddingString Answer a string to use in a menu offering the user the opportunity to start or stop using gridding
	setGridSpec Gridding rectangle provides origin and modulus

	initialization	top
	adaptedToWorld: If I refer to a world or a hand, return the corresponding items in the new world.
	becomeActiveDuring: Make the receiver the ActiveWorld during the evaluation of aBlock. Note that this method does deliberately *not* use #ensure: to prevent re-installation of the world on project switches.
	initialize
	initializeToStandAlone Answer an instance of the receiver suitable for placing in a parts bin for authors
	newResourceLoaded Some resource has just been loaded. Notify all morphs in case somebody wants to update accordingly.
	releaseCachedState Release any state that can be recomputed on demand, such as the pixel values for a color gradient or the editor state for a TextMorph. This method may be called to save space when a morph becomes inaccessible. Implementations of this method should do 'super releaseCachedState'.

	interaction loop	top
	doOneCycleNow Do one cycle of the interactive loop. This method is called repeatedly when the world is running.
	keyStroke: A keystroke has been made. Service event handlers and, if it's a keystroke presented to the world, dispatch it to #unfocusedKeystroke:

	layout	top
	addCenteredAtBottom:offset: Add aMorph beneath all other morphs currently in the receiver, centered horizontally, with the vertical offset from the bottom of the previous morph given by anOffset
	convertAlignment
	laySubpartsOutInOneRow
	layoutChanged The receiver's layout changed; inform above and below

	menu & halo	top
	addCustomMenuItems:hand: Add morph-specific menu itemns to the menu for the hand
	addPenMenuItems:hand: Add a pen-trails-within submenu to the given menu
	addPenTrailsMenuItemsTo: Add items relating to pen trails to aMenu
	addPlayfieldMenuItems:hand:
	addScalingMenuItems:hand:
	addStackMenuItems:hand: Add appropriate stack-related items to the given menu
	addWorldHaloMenuItemsTo:hand: Add standard halo items to the menu, given that the receiver is a World
	addWorldToggleItemsToHaloMenu: Add toggle items for the world to the halo menu
	autoExpansionString Answer the string to be shown in a menu to represent the auto-phrase-expansion status
	autoLineLayoutString Answer the string to be shown in a menu to represent the auto-line-layout status
	autoViewingString Answer the string to be shown in a menu to represent the automatic-viewing status
	batchPenTrailsString Answer the string to be shown in a menu to represent the batch-pen-trails enabled status
	buildDebugMenu: Answer a debugging menu for the receiver. The hand argument is seemingly historical and plays no role presently
	defersHaloOnClickTo: If a cmd-click on aSubMorph would make it a preferred recipient of the halo, answer true
	defineApplicationView
	defineFactoryView
	deleteBalloonTarget: Delete the balloon help targeting the given morph
	fenceEnabledString Answer the string to be shown in a menu to represent the fence enabled status
	indicateCursorString Answer the string to be shown in a menu to represent the whether-to-indicate-cursor status
	isOpenForDragNDropString Answer the string to be shown in a menu to represent the open-to-drag-n-drop status
	isPartsBinString Answer the string to be shown in a menu to represent the parts-bin status
	mightEntertainDirectionHandles Answer whether the receiver, by its very nature, might possibly be happy to have direction handles shown for it in its halo
	mouseOverHalosString Answer the string to be shown in a menu to represent the mouse-over-halos status
	originAtCenterString Answer the string to be shown in a menu to represent the origin-at-center status
	playfieldOptionsMenu Answer an auxiliary menu with options specific to playfields -- too many to be housed in the main menu
	presentCardAndStackMenu Put up a menu holding card/stack-related options.
	presentPlayfieldMenu
	presentViewMenu Answer an auxiliary menu with options specific to viewing playfields -- this is put up from the provisional 'view' halo handle, on pasteup morphs only.
	reformulateUpdatingMenus Give any updating menu morphs in the receiver a fresh kiss of life
	saveOnFile Ask the user for a filename and save myself on a SmartReferenceStream file. Writes out the version and class structure. The file is fileIn-able. UniClasses will be filed out.
	showApplicationView
	showExpandedView the transform
	showFactoryView
	showFullView
	showReducedView
	showThumbnailString Answer the string to be shown in a menu to represent the show-thumbnails status
	transformToShow:
	wantsDirectionHandles
	wantsHaloFor: Answer whether the receiver wishes for a mouse-over halo to be produced for aSubMorph
	wantsHaloFromClick

	misc	top
	abandonCostumeHistory
	allScriptEditors
	allScriptors Answer a list of all active scriptors running on behalf of the receiver. This is a hook used in past demos and with a future life which however presently is vacuous
	alwaysShowThumbnail
	cachedOrNewThumbnailFrom: If I have a cached thumbnail, and it is of the desired extent, then ruturn it. Otherwise produce one in newThumbnail and return it (after caching). This code parallels what happens in page: to match resultant extent.
	cartesianOrigin
	closedViewerFlapTabs Answer all the viewer flap tabs in receiver that are closed
	containsCard: Answer whether the given card belongs to the uniclass representing the receiver
	demandsBoolean Sent by some scripting objects to their container
	heightForThumbnails
	hideFlapsOtherThan:ifClingingTo: Hide flaps on the given edge unless they are the given one
	hideViewerFlaps
	hideViewerFlapsOtherThanFor:
	impartPrivatePresenter
	innocuousName Choose an innocuous name for the receiver -- one that does not end in the word Morph
	invalidRect:from: Clip damage reports to my bounds, since drawing is clipped to my bounds.
	isPlayfieldLike
	makeDetachable
	maxHeightToAvoidThumbnailing
	maximumThumbnailWidth
	mouseX
	mouseY
	nameForCopyIfAlreadyNamed: Answer a name to set for a copy of aMorph if aMorph itself is named, else nil
	padding:
	position: Prevent moving a world (e.g. via HandMorph>>specialGesture:)
	prepareToBeSaved Prepare this morph to be saved to disk. Subclasses should nil out any instance variables that holds state that should not be saved, such as cached Forms. Note that this operation may take more drastic measures than releaseCachedState; for example, it might discard the transcript of an interactive chat session.
	presenter Normally only the world will have a presenter, but the architecture supports individual localized presenters as well
	residesInPartsBin Answer true if the receiver is, or has some ancestor owner who is, a parts bin
	roundUpStrays
	shouldGetStepsFrom:
	smallThumbnailForPageSorter
	startRunningAll Start running all scripted morphs. Triggered by user hitting GO button
	step Do some periodic activity. Use startStepping/stopStepping to start and stop getting sent this message. The time between steps is specified by this morph's answer to the stepTime message. The generic version dispatches control to the player, if any. The nasty circumlocation about owner's transformation is necessitated by the flexing problem that the player remains in the properties dictionary both of the flex and the real morph. In the current architecture, only the top renderer's pointer to the player should actually be honored for the purpose of firing.
	stepAll tick all the paused player scripts in the receiver
	stepTime Answer the desired time between steps in milliseconds. This default implementation requests that the 'step' method be called once every second.
	stopRunningAll Reset all ticking scripts to be paused. Triggered by user hitting STOP button
	thumbnailForPageSorter
	unhideHiddenObjects
	updateStatusForAllScriptEditors
	viewerFlapTabFor: Open up a Viewer on aMorph in its own flap, creating it if necessary
	wantsKeyboardFocusFor: Answer whether a plain mouse click on aSubmorph, a text-edit-capable thing, should result in a text selection there

	model	top
	createCustomModel Create a model object for this world if it does not yet have one. A model object is an initially empty subclass of MorphicModel. As the user names parts and adds behavior, instance variables and methods are added to this class.
	model Return the model object for this world. If the world has no model, then create one.
	modelOrNil Return the model object for this world, or nil if it doesn't have one.
	setModel: Set the model for this world. Methods for sensitized morphs will be compiled into the class for this model.

	naming	top
	defaultNameStemForInstances Answer a basis for names of default instances of the receiver

	object fileIn	top
	convertToCurrentVersion:refStream: transition from project to worldState (8/16/1999)

	options	top
	autoLineLayout
	autoLineLayout: Make the receiver be viewed with auto-line-layout, which means that its submorphs will be laid out left-to-right and then top-to-bottom in the manner of a word processor, or (if aBoolean is false,) cease applying auto-line-layout
	automaticViewing:
	batchPenTrails Answer whether pen trails should be batched in the receiver
	batchPenTrails:
	becomeLikeAHolder
	behaveLikeAHolderString Answer a string to be displayed in a menu to characterize whether the receiver is currently behaving like a holder
	behaveLikeHolder
	behaveLikeHolder: Change the receiver's viewing properties such that they conform to what we commonly call a Holder, viz: resize-to-fit, do auto-line-layout, and indicate the 'cursor'
	behavingLikeAHolder Answer whether the receiver is currently behaving like a Holder
	fenceEnabled in case a non-pasteUp is used as a container
	fenceEnabled:
	indicateCursor
	indicateCursor:
	isPartsBin
	isPartsBin:
	replaceTallSubmorphsByThumbnails Any submorphs that seem to tall get replaced by thumbnails; their balloon text is copied over to the thumbnail
	resizeToFit
	resizeToFitString Answer a string, to be used in a self-updating menu, to represent whether the receiver is currently using resize-to-fit or not
	setPartsBinStatusTo:
	setThumbnailHeight
	toggleAlwaysShowThumbnail
	toggleAutoLineLayout Toggle the auto-line-layout setting
	toggleAutomaticPhraseExpansion
	toggleAutomaticViewing
	toggleBatchPenTrails
	toggleBehaveLikeAHolder Toggle whether or not the receiver is currently behaving like a holder
	toggleFenceEnabled
	toggleIndicateCursor
	toggleIsPartsBin Not entirely happy with the openToDragNDrop not being directly manipulable etc, but still living with it for now.
	toggleMouseOverHalos
	toggleOriginAtCenter
	toggleResizeToFit Toggle whether the receiver is set to resize-to-fit
	updateSubmorphThumbnails
	wantsMouseOverHalos
	wantsMouseOverHalos:

	painting	top
	backgroundSketch
	backgroundSketch: Set the receiver's background graphic as indicated. If nil is supplied, remove any existing background graphic. In any case, delete any preexisting background graphic.
	deleteBackgroundPainting
	makeNewDrawingWithin Start a painting session in my interior which will result in a new SketchMorph being created as one of my submorphs
	paintBackground
	paintingBoundsAround: Return a rectangle for painting centered on the given point. Both the argument point and the result rectangle are in world coordinates.
	prepareToPaint We're about to start painting. Do a few preparations that make the system more responsive.
	prepareToPaint: We're about to start painting. Do a few preparations that make the system more responsive.
	reasonablePaintingExtent

	pen	top
	addImageToPenTrailsFor: The turtleTrailsForm is created on demand when the first pen is put down and removed (to save space) when turtle trails are cleared.
	arrowheadsOnAllPens
	clearTurtleTrails
	createOrResizeTrailsForm If necessary, create a new turtleTrailsForm or resize the existing one to fill my bounds. On return, turtleTrailsForm exists and is the correct size.
	drawPenTrailFor:from:to: Draw a pen trail for aMorph, using its pen state (the pen is assumed to be down).
	liftAllPens
	lowerAllPens
	noArrowheadsOnAllPens
	noteNewLocation:forPlayer: Note that a morph has just moved with its pen down, begining at startPoint. Only used in conjunction with Preferences batchPenTrails.
	notePenDown:forPlayer:at: Note that a morph has just moved with its pen down, begining at startPoint. Only used in conjunction with Preferences batchPenTrails.
	trailMorph Yes, you can draw trails on me.
	updateTrailsForm Update the turtle-trails form using the current positions of all pens. Only used in conjunction with Preferences batchPenTrails.

	private	top
	morphicLayerNumber helpful for insuring some morphs always appear in front of or behind others. smaller numbers are in front
	privateFullMoveBy: Private. Overridden to prevent drawing turtle trails when a playfield is moved

	project	top
	project Find the project that owns me. Not efficient to call this.
	releaseSqueakPages If this world has a book with SqueakPages, then clear the SqueakPageCache
	storeProjectsAsSegments Force my sub-projects out to disk

	project state	top
	activeHand
	canvas
	firstHand
	hands
	handsDo:
	isStepping:
	isStepping:selector:
	listOfSteppingMorphs
	modelWakeUp I am the model of a SystemWindow, that has just been activated
	stepListSize
	stepListSummary
	steppingMorphsNotInWorld
	viewBox This tortured workaround arises from a situation encountered in which a PasteUpMorph was directliy lodged as a submorph of another PasteUpMorph of identical size, with the former bearing flaps but the latter being the world
	viewBox: I am now displayed within newViewBox; react.

	scripting	top
	abandonOldReferenceScheme Perform a one-time changeover
	allTileScriptingElements Answer a list of all the morphs that pertain to tile-scripting. A sledge-hammer
	currentVocabulary Answer the default Vocabulary object to be applied when scripting
	currentVocabularyFor: Answer the Vocabulary object to be applied when scripting an object in the world.
	hideAllPlayers
	isCandidateForAutomaticViewing A viewer on a world is a dangerous thing to get casually!
	modernizeBJProject Prepare a kids' project from the BJ fork of September 2000 -- a once-off thing for converting such projects forward to a modern 3.1a image, in July 2001. Except for the #enableOnlyGlobalFlapsWithIDs: call, this could conceivably be called upon reloading *any* project, just for safety.
	recreateScripts self currentWorld recreateScripts.
	relaunchAllViewers Relaunch all the viewers in the project
	scriptorForTextualScript:ofPlayer:
	showAllPlayers

	stepping	top
	cleanseStepList Remove morphs from the step list that are not in this World. Often were in a flap that has moved on to another world.
	runLocalStepMethods
	runStepMethods
	startStepping: Add the given morph to the step list. Do nothing if it is already being stepped.
	startStepping:at:selector:arguments:stepTime:
	stopStepping: Remove the given morph from the step list.
	stopStepping:selector: Remove the given morph from the step list.

	submorphs-accessing	top
	morphsInFrontOf:overlapping:do: Include hands if the receiver is the World

	submorphs-add/remove	top
	addMorphFront:
	addMorphInLayer:

	undo	top
	clearCommandHistory
	commandHistory Return the command history for the receiver

	update cycle	top
	startBackgroundProcess Start a process to update this world in the background. Return the process created.

	viewing	top
	addViewingItemsTo: Add viewing-related items to the given menu. If any are added, this method is also responsible for adding a line after them
	imposeListViewSortingBy:retrieving: Establish a list view of the receiver's contents, sorting the contents by the criterion represented by sortOrderSymbol, and displaying readouts as indicated by the list of field selectors.
	restoreBoundsOfSubmorphs restores the saved xy-positions and extents
	saveBoundsOfSubmorphs store the current xy-positions and extents of submorphs for future use
	scriptSelectorToTriggerFor: Answer a new selector which will bear the code for aButtonMorph in the receiver
	showingListView Answer whether the receiver is currently showing a list view
	sortSubmorphsBy: Sort the receiver's submorphs by the criterion indicated in the provided symbol
	viewByIcon The receiver has been being viewed in some constrained layout view; now restore it to its normal x-y-layout view
	viewByName Make the receiver show its subparts as a vertical list of lines of information, sorted by object name
	viewBySize Make the receiver show its subparts as a vertical list of lines of information, sorted by object size
	viewNonOverlapping Make the receiver show its contents as full-size morphs laid out left-to-right and top-to-bottom to be non-overlapping.
	viewingByIconString Answer a string to show in a menu representing whether the receiver is currently viewing its subparts by icon or not
	viewingByNameString Answer a string to show in a menu representing whether the receiver is currently viewing its subparts by name or not
	viewingBySizeString Answer a string to show in a menu representing whether the receiver is currently viewing its subparts by size or not
	viewingNonOverlappingString Answer a string to show in a menu representing whether the receiver is currently viewing its subparts by non-overlapping-icon (aka auto-line-layout)
	viewingNormally Answer whether the receiver is being viewed normally, viz not in list-view or auto-line-layout

	world menu	top
	activateObjectsTool Offer the user a parts bin of morphs -- if one already exists, bring it to the front and flash its border beckoningly; if none exists yet, create a new one and place it in the center of the screen
	addUndoItemsTo: Add undo-related items to the given menu. Will add zero, one or two items, depending on the settings of the #useUndo and #infiniteUndo preferences
	bringWindowsFullOnscreen Make ever SystemWindow on the desktop be totally on-screen, whenever possible.
	buildWorldMenu:
	closeUnchangedWindows Present a menu of window titles for all windows with changes, and activate the one that gets chosen.
	collapseAll Collapse all windows
	collapseNonWindows
	connectRemoteUser
	connectRemoteUserWithName:picture:andIPAddress: Prompt for the initials to be used to identify the cursor of a remote user, then create a cursor for that user and wait for a connection.
	deleteNonWindows
	detachableScriptingSpace
	disconnectAllRemoteUsers Disconnect all remote hands and stop transmitting events.
	disconnectRemoteUser Prompt for the initials of the remote user, then remove the remote hand with those initials, breaking its connection.
	drawingClass
	expandAll Expand all windows
	extractScreenRegion:andPutSketchInHand: The user has specified a polygonal area of the Display. Now capture the pixels from that region, and put in the hand as a Sketch.
	findAChangeSorter: Locate a change sorter, open it, and bring it to the front. Create one if necessary. Only works in morphic, initially, probably
	findAMessageNamesWindow: Locate a MessageNames tool, open it, and bring it to the front. Create one if necessary
	findAPreferencesPanel: Locate a Preferences Panel, open it, and bring it to the front. Create one if necessary
	findATranscript: Locate a transcript, open it, and bring it to the front. Create one if necessary
	findDirtyBrowsers: Present a menu of window titles for browsers with changes, and activate the one that gets chosen.
	findDirtyWindows: Present a menu of window titles for all windows with changes, and activate the one that gets chosen.
	findWindow: Present a menu names of windows and naked morphs, and activate the one that gets chosen. Collapsed windows appear below line, expand if chosen; naked morphs appear below second line; if any of them has been given an explicit name, that is what's shown, else the class-name of the morph shows; if a naked morph is chosen, bring it to front and have it don a halo.
	getWorldMenu:
	grabDrawingFromScreen: Allow the user to specify a rectangular area of the Display, capture the pixels from that area, and use them to create a new drawing morph. Attach the result to the hand.
	grabFloodFromScreen: Allow the user to plant a flood seed on the Display, and create a new drawing morph from the resulting region. Attach the result to the hand.
	grabLassoFromScreen: Allow the user to specify a polygonal area of the Display, capture the pixels from that area, and use them to create a new drawing morph. Attach the result to the hand.
	grabRubberBandFromScreen: Allow the user to specify a polygonal area of the Display, capture the pixels from that area, and use them to create a new drawing morph. Attach the result to the hand.
	invokeWorldMenu: Put up the world menu, triggered by the passed-in event. But don't do it if the eToyFriendly preference is set to true.
	keystrokeInWorld: A keystroke was hit when no keyboard focus was in set, so it is sent here to the world instead. This current implementation is regrettably hard-coded; until someone cleans this up, you may wish to edit this method to suit your personal taste in interpreting cmd-keys issued to the desktop.
	makeNewDrawing:
	makeNewDrawing:at:
	newDrawingFromMenu:
	openRecentSubmissionsBrowser: Locate a recent-submissions browser, open it, and bring it to the front. Create one if necessary. Only works in morphic
	openScrapsBook: Open up the Scraps book in the center of the screen
	printScriptSummary Put up a window with summaries of all scripts in the world
	putUpDesktopMenu: Put up the desktop menu
	putUpWorldMenu: Put up a menu in response to a click on the desktop, triggered by evt.
	putUpWorldMenuFromEscapeKey
	removeAllViewers Delete all the viewers lined up along my right margin.
	reportLocalAddress Report the local host address of this computer.
	showStatusOfAllScripts Put up a window that shows, and allows you to change, the status of all scripts
	yellowButtonClickOnDesktopWithEvent: Put up either the personalized menu or the world menu when the user clicks on the morphic desktop with the yellow button. The preference 'personalizedWorldMenu' governs which one is used

	world state	top
	abandonAllHalos
	abandonVocabularyPreference Remove any memory of a preferred vocabulary in the project
	activeHand: temporarily retained for old main event loops
	addAllMorphs:
	addHand: Add the given hand to the list of hands for this world.
	addMorph:centeredNear: Add the given morph to this world, attempting to keep its center as close to the given point possible while also keeping the it entirely within the bounds of this world.
	addMorphsAndModel: Dump in submorphs, model, and stepList from aMorphOrList. Used to bring a world, paste-up, or other morph in from an object file.
	allMorphsDo: Enumerate all morphs in the world, including those held in hands.
	allNonFlapRelatedSubmorphs Answer all non-window submorphs that are not flap-related
	assureNotPaintingElse: If painting is already underway in the receiver, put up an informer to that effect and evalute aBlock
	assureNotPaintingEvent: If painting is already underway in the receiver, put up an informer to that effect and evalute aBlock
	assuredCanvas
	beWorldForProject:
	checkCurrentHandForObjectToPaste
	checkCurrentHandForObjectToPaste2
	chooseClickTarget
	colorAt:belowMorph: Return the color of the pixel immediately behind the given morph at the given point. NOTE: due to some bounds wobble in flexing, we take the middle of 3x3 rect.
	currentNaturalLanguage Answer the natural language symbol of the current project's natural language
	deEmphasizeViewMVC:
	deleteAllHalos
	displayWorld
	displayWorldAsTwoTone Display the world in living black-and-white. (This is typically done to save space.)
	displayWorldNonIncrementally Display the morph world non-incrementally. Used for testing.
	displayWorldSafely
	doOneCycle
	doOneCycleInBackground
	doOneSubCycle Like doOneCycle, but preserves activeHand.
	dragThroughOnDesktop: Draw out a selection rectangle
	embeddedProjectDisplayMode #naked - the embedded project/world is just a pasteup in the outer p/w #window - the embedded p/w is in a system window in the outer p/w #frame - the embedded p/w is in a green frame and clipped #scaled - the embedded p/w is in a green frame and scaled to fit
	endDrawing: If painting is already underway in the receiver, finish and save it.
	exit
	extent:
	flashRects:color: For testing. Flashes the given list of rectangles on the Display so you can watch incremental redisplay at work.
	fullContainsPoint: The world clips its children
	fullRepaintNeeded
	goBack
	haloMorphOrNil
	haloMorphs
	handleFatalDrawingError: Handle a fatal drawing error.
	initForProject:
	install
	installAsActiveSubprojectIn:at:titled:
	installAsActiveSubprojectIn:titled:
	installFlaps Get flaps installed within the bounds of the receiver
	installVectorVocabulary Install the experimental Vector vocabulary as the default for the current project
	jumpToProject
	nextPage backstop for smart next-page buttons that look up the containment hierarchy until they find somone who is willing to field this command. If we get here, the 'next' button was not embedded in a book, so we can do nothing useful
	open Open a view on this WorldMorph.
	openWithTitle:cautionOnClose: Open a view on this WorldMorph with the given title.
	optimumExtentFromAuthor
	paintArea What rectangle should the user be allowed to create a new painting in?? An area beside the paintBox. Allow playArea to override with its own bounds!
	paintAreaFor: Answer the area to comprise the onion-skinned canvas for painting/repainting aSketchMorph
	paintBox Return the painting controls widget (PaintBoxMorph) to be used for painting in this world. If there is not already a PaintBox morph, or if it has been deleted from this world, create a new one.
	paintBoxOrNil Return the painting controls widget (PaintBoxMorph) to be used for painting in this world. If there is not already a PaintBox morph return nil
	patchAt:without:andNothingAbove: Return a complete rendering of this patch of the display screen without stopMorph, and possibly without anything above it.
	pauseEventRecorder Suspend any event recorder, and return it if found
	previousPage backstop for smartprev-page buttons that look up the containment hierarchy until they find somone who is willing to field this command. If we get here, the button was not embedded in a book, so we can do nothing useful
	privateMoveBy: Private! Use 'position:' instead.
	privateOuterDisplayWorld
	referencePlayfield Answer a pasteup morph to be used as the reference for cartesian coordinates
	removeHand: Remove the given hand from the list of hands for this world.
	repairEmbeddedWorlds
	repositionFlapsAfterScreenSizeChange Reposition flaps after screen size change
	restoreDisplay
	restoreFlapsDisplay Restore the display of flaps
	restoreMorphicDisplay
	saveAsWorld
	sketchEditorOrNil Return a SketchEditorMorph found in the world, if any, else nil
	sleep
	someHalo Return some halo that's currently visible in the world
	specialNameInModelFor:
	standardPlayerHit
	standardSystemController
	startSteppingSubmorphsOf: Ensure that all submorphs of the given morph that want to be stepped are added to the step list. Typically used after adding a morph to the world.
	triggerClosingScripts If the receiver has any scripts set to run on closing, run them now
	triggerOpeningScripts If the receiver has any scripts set to run on opening, run them now
	veryDeepCopyWith: See storeDataOn:

	project	top
	MinCycleLapse: set the minimum amount of time that may transpire between two calls to doOneCycle
	disableDeferredUpdates
	disableDeferredUpdates: If the argument is true, disable deferred screen updating.
	initialize WorldMorph initialize
	newWorldForProject: Return a new pasteUpMorph configured as a world (ie project notNil). projectOrNil is no longer used.
	newWorldTesting
	shutDown This message is sent on system shutdown to registered classes
	startUp This message is sent to registered classes when the system is coming up.

	scripting	top
	additionsToViewerCategories Answer a list of (<categoryName> <list of category specs>) pairs that characterize the phrases this kind of morph wishes to add to various Viewer categories.
	authoringPrototype Answer an instance of the receiver suitable for placing in a parts bin for authors
	defaultNameStemForInstances Answer a basis for names of default instances of the receiver
	descriptionForPartsBin If the receiver is a member of a class that would like to be represented in a parts bin, answer the name by which it should be known, and a documentation string to be provided, for example, as balloon help. When the 'nativitySelector' is sent to the 'globalReceiver', it is expected that some kind of Morph will result. The parameters used in the implementation below are for documentation purposes only!
	supplementaryPartsDescriptions Answer a list of DescriptionForPartsBin objects that characterize objects that this class wishes to contribute to Stationery bins *other* than by the standard default #newStandAlone protocol